MINNEAPOLIS --Minnesota Twins general manager Terry Ryan announced Friday that starter Samuel Deduno would undergo arthroscopic shoulder surgery on Wednesday, with team doctors John Steubs and Diane Dahm performing the procedure.

Ryan called the surgery a clean-up, mostly to take care of some fraying in the shoulder. A recovery timetable of two months is expected, which will preclude Deduno from pitching this winter, but should leave him ready at the outset of spring training.

Ryan also said no determination has been made about whether or not Joe Mauer will accompany the Twins on their final road trip of the year. Mauer worked out and reported no ill effects afterwards for a second straight day Friday.

Here's a quick look at how some of the Minnesota Twins have fared over the past 30 days:

* It's easy to see why the Twins offense has been ice cold over the past 30 days -- 23rd in runs scored -- as the blame largely falls on an offense whose best full-time hitter in that time frame has just a .320 wOBA. That's Brian Dozier, and that wOBA is only slightly above the American League average of .314.

*Mauer has also been considered 'hot' in that time frame, but has only played six games (.464/.500/.786, 2 home runs)

* Former Twin Denard Span extended his hitting streak to 24 games. Span extended the streak with a sixth inning single off former Detroit Tigers farmhand Zach Miner. It was Span's only hit in a 1 for 5 night.